Anti-white-spot detection jig for display module
By designing a display module anti-white spot detection fixture containing a lifting table, a test pressure head and a pressure sensor, the problem of inaccurate pressure in the existing detection methods is solved, and efficient and accurate detection results are achieved.
Patent Information
- Application Number
- CN202411991352.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-28
AI Technical Summary
The existing detection methods of the anti-white spots of the display module cannot accurately control the test pressure, resulting in the inability to accurately test the compressive performance of the material. It requires multiple tests and is costly.
A detection fixture for displaying modules is designed, including a base, gantry bracket, lifting table, test pressure head, display module bracket, observation mirror and controller. The drop of the test pressure head is controlled through the lifting table driving mechanism, and the pressure is displayed using the pressure sensor and controller to ensure the accuracy of detection.
A one-time accurate test display module can withstand the force, ensuring the accuracy of the test and reducing the testing cost.
Smart Images
Figure CN119715164A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of display screen detection, and in particular to an anti-white spot detection fixture for a display module. Background Art
[0002] The display screen needs to check the anti-white spot ability of the corresponding materials of the finished display module, and rationally select materials when there is a point pressure test on the customer's whole machine at the front end of the design; the existing display module anti-white spot detection is to manually hold the display module, press the center point of the display module with your finger, and observe whether the display module has white spots; this detection method cannot accurately control the pressure, and thus cannot accurately test the compressive resistance of the material, and requires multiple tests, which is costly. Summary of the invention
[0003] The purpose of the present invention is to solve the problem of inaccurate pressure in the existing display module anti-white spot detection test.
[0004] The technical solution adopted to solve the technical problem proposed by the present invention is as follows: the display module anti-white spot detection fixture of the present invention includes a base, a gantry bracket, a lifting platform, a lifting platform driving mechanism, a test pressure head, a display module bracket, an observation mirror and a controller, the gantry bracket is located on the base, the two ends of the lifting platform are slid up and down on the gantry bracket, the lifting platform driving mechanism drives the lifting platform to move up and down, the test pressure head is located in the middle of the lifting platform, the display module bracket is located below the test pressure head, a pressure sensor is provided on the test pressure head, the pressure sensor is connected to the controller, the controller is connected to the display screen, a display module positioning plate is provided on the display module bracket, an observation hole for exposing the display area of the display module is provided in the middle of the display module positioning plate, and the observation mirror is inclined below the observation hole.
[0005] The technical solutions for further limiting the present invention include: The display module positioning plate is slidably arranged on the display module bracket, the display module bracket is provided with a guide groove in the front-to-back direction, the display module positioning plate is located in the guide groove, the bottom of the guide groove is provided with an adjustment hole in the front-to-back direction, and the display module positioning plate is provided with a mounting hole matching the adjustment hole.
[0006] The base is provided with an observation mirror adjusting mechanism for driving the observation mirror to move up and down.
[0007] The observation mirror adjustment mechanism is a connecting rod drive mechanism, which includes a connecting rod mounting seat, a first bottom support rod, a second bottom support rod, an X-shaped upgrade connecting rod, a first top support rod, a second top support rod, a support plate and an adjusting screw. The connecting rod mounting seat is provided with a first connecting rod guide groove in a front-to-back direction. The first bottom support rod and the second bottom support rod are arranged in parallel in the first connecting rod guide groove. The first bottom support rod is fixedly connected to the side wall of the first connecting rod guide groove. The second bottom support rod is slidably arranged in the first connecting rod guide groove. The bottom of the support plate is provided with a second connecting rod guide groove in a front-to-back direction. A top support rod and a second top support rod are arranged in parallel in the second connecting rod guide groove, the first top support rod is fixedly connected to the side wall of the second connecting rod guide groove, the second top support rod is slidably arranged in the second connecting rod guide groove, the front and rear sides of the bottom of the X-shaped upgrade connecting rod are rotatably connected to the first bottom support rod and the second bottom support rod respectively, the front and rear sides of the top of the X-shaped upgrade connecting rod are rotatably connected to the first top support rod and the second top support rod respectively, the adjusting screw connects the first bottom support rod and the second bottom support, and the first bottom support rod and the second bottom support are respectively provided with threaded holes that cooperate with the adjusting screw.
[0008] The test pressure head is arranged on the lifting platform through a pressure rod that can move left and right. The pressure rod is provided with a sleeve ring that matches the upgrading platform, and the sleeve ring is sleeved on the lifting platform.
[0009] The base is provided with horizontal guide grooves in left and right directions, the display module bracket is located on the horizontal guide grooves, and the bottom of the display module bracket is provided with mounting holes that match the horizontal guide grooves.
[0010] The horizontal guide groove of the observation mirror along the left and right directions can be adjusted and arranged on the base, and a locking piece for fixing the observation mirror is arranged on the base.
[0011] The lifting platform driving mechanism is a motor screw driving mechanism, and the motor screw driving mechanism drives the lifting platform to slide up and down on the gantry bracket.
[0012] The lifting platform driving mechanism is a cylinder driving mechanism, and the cylinder driving mechanism drives the lifting platform to slide up and down on the gantry bracket.
[0013] The lifting platform driving mechanism is a chain driving mechanism, and the chain driving mechanism drives the lifting platform to slide up and down on the gantry bracket.
[0014] Through the above technical scheme, the beneficial effects of the present invention are as follows: when the display module anti-white spot detection fixture of the present invention is used for detection, the display module is placed on the display module positioning plate, the display area of the display module is exposed from the observation hole, the lifting platform driving mechanism drives the lifting platform to descend, and the test pressure head is pressed on the back of the display module. During the slow descent of the test pressure head, the white spots in the display area are observed through the observation mirror. When white spots appear in the display area, the descent of the lifting platform is stopped, and the pressure sensor displays the measured pressure on the display screen through the controller, so that the force that the product can withstand can be accurately tested at one time, the accuracy of the test is ensured, and the cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a detection fixture for anti-white spot on a display module according to the present invention.
[0016] Figure 2 It is a partial structural schematic diagram of a detection fixture for anti-white spot of a display module according to the present invention.
[0017] Figure 3 The present invention is a schematic diagram of the installation structure of an observation mirror of a display module anti-white spot detection fixture.
[0018] Figure 4 The present invention is a schematic diagram of the installation structure of an observation mirror of a display module anti-white spot detection fixture. DETAILED DESCRIPTION
[0019] The structure of the present invention is further described below in conjunction with the accompanying drawings.
[0020] Reference Figures 1 to 4 The display module anti-white spot detection fixture of the present invention includes a base 1, a gantry bracket 2, a lifting platform 3, a lifting platform driving mechanism, a test pressure head 5, a display module bracket 6, an observation mirror 4 and a controller 8. The gantry bracket is located on the base, and the two ends of the lifting platform are slid up and down on the gantry bracket. The lifting platform driving mechanism drives the lifting platform to move up and down. The test pressure head 5 is located in the middle of the lifting platform, and the display module bracket 6 is located below the test pressure head. A pressure sensor is provided on the test pressure head, and the pressure sensor is connected to the controller. The controller is connected to the display screen 9. A display module positioning plate 61 is provided on the display module bracket 6, and an observation hole 611 for exposing the display area of the display module 10 is provided in the middle of the display module positioning plate 61, and the observation mirror is inclined below the corresponding observation hole.
[0021] In this embodiment, the test pressure head 5 is arranged on the lifting platform by a pressure rod 51, and a sleeve ring 52 is arranged on the pressure rod 51 to cooperate with the upgrading platform, and the sleeve ring is sleeved on the lifting platform. The position of the test pressure head can be adjusted by pushing the sleeve ring left and right.
[0022] In this embodiment, the display module positioning plate 61 is slidably arranged on the display module bracket 6, and a guide groove 62 in the front-to-back direction is provided on the display module bracket 6. The display module positioning plate is located in the guide groove, and an adjustment hole 63 in the front-to-back direction is provided at the bottom of the guide groove. The display module positioning plate 61 is provided with a mounting hole 611 that matches the adjustment hole. The display module bracket is composed of two inverted L-shaped vertical plates arranged opposite to each other, and the guide groove is located on the L-shaped short side of the vertical plate. The display module positioning plate overlaps the L-shaped short side of the vertical plate and is located in the guide groove. The display module positioning plate can move forward and backward in the guide groove to adjust the position. After the adjustment is completed, the display module positioning plate is fixed to the display module bracket through the mounting hole. Bolts can be passed through the mounting hole and the guide groove and then installed and fixed by nuts.
[0023] In this embodiment, the base is provided with an observation mirror adjustment mechanism 7 for driving the observation mirror to move up and down. The observation mirror adjustment mechanism 7 is a connecting rod driving mechanism, which includes a connecting rod mounting seat 71, a first bottom support rod 72, a second bottom support rod 73, an X-shaped upgrade connecting rod 74, a first top support rod 75, a second top support rod 76, a support plate 77 and an adjusting screw 78. The connecting rod mounting seat 71 is provided with a first connecting rod guide groove 711 in the front-to-back direction, and the first bottom support rod and the second bottom support rod are arranged in parallel in the first connecting rod guide groove. In this embodiment, the two first connecting rod guide grooves are arranged oppositely, and both ends of the first bottom support rod and the second bottom support rod are located in the first connecting rod guide groove. The first bottom support rod is fixedly connected to the side wall of the first connecting rod guide groove, and the second bottom support rod is slidably arranged in the first connecting rod guide groove. The bottom of the support plate 77 is provided with a front-to-back direction. The second connecting rod guide groove 771, the first top support rod and the second top support rod are arranged in parallel in the second connecting rod guide groove. In this embodiment, the two second connecting rod guide grooves are arranged oppositely, and both ends of the first top support rod and the second top support rod are located in the second connecting rod guide groove. The first top support rod is fixedly connected to the side wall of the second connecting rod guide groove, and the second top support rod is slidably arranged in the second connecting rod guide groove. The front and rear sides of the bottom of the X-shaped upgrade connecting rod are respectively rotatably connected with the first bottom support rod and the second bottom support rod, and the front and rear sides of the top of the X-shaped upgrade connecting rod are respectively rotatably connected with the first top support rod and the second top support rod, and the adjustment screw connects the first bottom support rod and the second bottom support, and the first bottom support rod and the second bottom support are respectively provided with threaded holes that match the adjustment screw. One end of the adjustment screw 78 is provided with an anti-slip handle 781. When adjusting the observation mirror upward, the anti-slip handle is rotated, and the second bottom support rod moves toward the first bottom support rod. Driven by the X-shaped upgrade connecting rod, the second top support rod moves toward the first top support rod, and the support plate rises upward, thereby driving the observation mirror to move upward. When adjusting the observation mirror downward, the anti-slip handle is rotated in the opposite direction, the second bottom support rod moves away from the first bottom support rod, and driven by the X-shaped upgrade connecting rod, the second top support rod moves away from the first top support rod, and the support plate moves downward, thereby driving the observation mirror to move downward.
[0024] In this embodiment, a horizontal guide groove 11 in the left-right direction is provided on the base 1, and the display module bracket is located on the horizontal guide groove. A mounting hole that matches the horizontal guide groove is provided at the bottom of the display module bracket. The mounting hole can be a screw hole. After the relative position of the display module bracket and the base is adjusted, the screw can be passed through the horizontal guide groove and screwed to the screw hole at the bottom of the display module bracket, thereby fixing the display module bracket to the base.
[0025] In this embodiment, the horizontal guide groove along the left and right direction of the observation mirror can be adjusted and arranged on the base, and a locking piece for fixing the observation mirror is provided on the base. The locking piece can be a screw, and the connecting rod mounting seat is provided with a connecting rod mounting seat screw hole that matches the horizontal guide groove. After the position adjustment of the connecting rod mounting seat is completed, the screw can be passed through the horizontal guide groove and screwed and fixed to the connecting rod mounting seat screw hole, thereby fixing the connecting rod mounting seat to the base.
[0026] In this embodiment, the lifting platform driving mechanism is a motor screw driving mechanism, which drives the lifting platform to slide up and down on the gantry bracket. In a specific implementation, the lifting platform driving mechanism can also be a cylinder driving mechanism, which drives the lifting platform to slide up and down on the gantry bracket. In a specific implementation, the lifting platform driving mechanism can also be a chain driving mechanism, which drives the lifting platform to slide up and down on the gantry bracket.
[0027] When the display module anti-white spot detection fixture of the present invention is tested, the display module is placed on the display module positioning plate, the display area of the display module is exposed from the observation hole, the lifting platform driving mechanism drives the lifting platform to descend, and the test pressure head is pressed on the back of the display module. During the slow descent of the test pressure head, the white spots in the display area are observed through the observation mirror. When white spots appear in the display area, the descent of the lifting platform is stopped, and the pressure sensor displays the measured pressure on the display screen through the controller, so that the force that the product can withstand can be accurately tested at one time, the accuracy of the test is guaranteed, and the cost is saved.
[0028] Although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of the present invention. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the scope of protection of the present invention.
Claims
1. A display module anti-white spot detection fixture, characterized by: The detection fixture includes a base, a gantry bracket, a lifting platform, a lifting platform driving mechanism, a test pressure head, a display module bracket, an observation mirror and a controller. The gantry bracket is located on the base, and the two ends of the lifting platform are slid up and down on the gantry bracket. The lifting platform driving mechanism drives the lifting platform to move up and down. The test pressure head is located in the middle of the lifting platform, and the display module bracket is located below the test pressure head. A pressure sensor is provided on the test pressure head, and the pressure sensor is connected to the controller. The controller is connected to the display screen. A display module positioning plate is provided on the display module bracket. The middle of the display module positioning plate is provided with an observation hole for exposing the display area of the display module, and the observation mirror is inclined below the observation hole.
2. A display module anti-white spot detection fixture as claimed in claim 1, characterized in that: The display module positioning plate is slidably arranged on the display module bracket, the display module bracket is provided with a guide groove in the front-to-back direction, the display module positioning plate is located in the guide groove, the bottom of the guide groove is provided with an adjustment hole in the front-to-back direction, and the display module positioning plate is provided with a mounting hole matching the adjustment hole.
3. A display module anti-white spot detection fixture as claimed in claim 1, characterized in that: The base is provided with an observation mirror adjusting mechanism for driving the observation mirror to move up and down.
4. A display module anti-white spot detection fixture as claimed in claim 3, characterized in that: The observation mirror adjustment mechanism is a connecting rod drive mechanism, which includes a connecting rod mounting seat, a first bottom support rod, a second bottom support rod, an X-shaped upgrade connecting rod, a first top support rod, a second top support rod, a support plate and an adjusting screw. The connecting rod mounting seat is provided with a first connecting rod guide groove in a front-to-back direction. The first bottom support rod and the second bottom support rod are arranged in parallel in the first connecting rod guide groove. The first bottom support rod is fixedly connected to the side wall of the first connecting rod guide groove. The second bottom support rod is slidably arranged in the first connecting rod guide groove. The bottom of the support plate is provided with a second connecting rod guide groove in a front-to-back direction. A top support rod and a second top support rod are arranged in parallel in the second connecting rod guide groove, the first top support rod is fixedly connected to the side wall of the second connecting rod guide groove, the second top support rod is slidably arranged in the second connecting rod guide groove, the front and rear sides of the bottom of the X-shaped upgrade connecting rod are rotatably connected to the first bottom support rod and the second bottom support rod respectively, the front and rear sides of the top of the X-shaped upgrade connecting rod are rotatably connected to the first top support rod and the second top support rod respectively, the adjusting screw connects the first bottom support rod and the second bottom support, and the first bottom support rod and the second bottom support are respectively provided with threaded holes that cooperate with the adjusting screw.
5. The display module anti-white spot detection fixture as claimed in claim 1, characterized in that: The test pressure head is arranged on the lifting platform through a pressure rod that can move left and right. The pressure rod is provided with a sleeve ring that matches the upgrading platform, and the sleeve ring is sleeved on the lifting platform.
6. The display module anti-white spot detection fixture according to claim 1, characterized in that: The base is provided with horizontal guide grooves in left and right directions, the display module bracket is located on the horizontal guide grooves, and the bottom of the display module bracket is provided with mounting holes that match the horizontal guide grooves.
7. A display module anti-white spot detection fixture as claimed in claim 6, characterized in that: The horizontal guide groove of the observation mirror along the left and right directions can be adjusted and arranged on the base, and a locking piece for fixing the observation mirror is arranged on the base.
8. The display module anti-white spot detection fixture as claimed in claim 1, characterized in that: The lifting platform driving mechanism is a motor screw driving mechanism, and the motor screw driving mechanism drives the lifting platform to slide up and down on the gantry bracket.
9. The display module anti-white spot detection fixture as claimed in claim 1, characterized in that: The lifting platform driving mechanism is a cylinder driving mechanism, and the cylinder driving mechanism drives the lifting platform to slide up and down on the gantry bracket.
10. The display module anti-white spot detection fixture according to claim 1, characterized in that: The lifting platform driving mechanism is a chain driving mechanism, and the chain driving mechanism drives the lifting platform to slide up and down on the gantry bracket.